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Side branched endoluminal prosthesis and methods of delivery thereof

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Side branched endoluminal prosthesis and methods of delivery thereof


An expandable prosthetic device and method of delivery that allows the initial placement of multiple guidewires into selected target sites. The prosthesis includes a main body device. This main body device has a separate side branch guidewire lumen that passes through the main body device and through a side opening in the main body device. As the main body device is advanced, the side opening is self guided (by the side branch guidewire) and self-aligns to the side branch vessel ostium. The main body device is then deployed, leaving the side branch guidewire in place. A side branch device is then advanced along the side branch guidewire through the main body device, through the side wall opening and into the native side branch vessel. The side branch device can then be deployed to engage the main body device and the native side branch vessel.

USPTO Applicaton #: #20120296411 - Class: 623 112 (USPTO) - 11/22/12 - Class 623 
Prosthesis (i.e., Artificial Body Members), Parts Thereof, Or Aids And Accessories Therefor > Arterial Prosthesis (i.e., Blood Vessel) >Stent Combined With Surgical Delivery System (e.g., Surgical Tools, Delivery Sheath, Etc.) >Expandable Stent With Constraining Means

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The Patent Description & Claims data below is from USPTO Patent Application 20120296411, Side branched endoluminal prosthesis and methods of delivery thereof.

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CROSS REFERENCE RELATED APPLICATIONS

This application is a continuation application of copending and commonly owned U.S. Ser. No. 11/739,136 filed Apr. 24, 2007.

FIELD OF THE INVENTION

The present invention relates to endoluminal prostheses and methods of delivery thereof. The endoluminal prostheses and method of delivery are particularly suited for use in bifurcated regions of body lumens.

BACKGROUND OF THE INVENTION

Stents or stent grafts are examples of expandable endoluminal prosthetic devices which are used to maintain, open or dilate stenotic lesions in body lumens or to cover and repair an aneurysm. Vascular disease may occur at a branch or bifurcation in a vessel. Placement and deployment of these prosthetic devices at bifurcations can often be problematic. One current technique is to initially deploy across an aneurysm, a main body prosthetic device having a side wall opening. The side wall opening is aligned with the side branch ostium. A second prosthetic device is then deployed through the main body prosthetic device side wall opening and into the side branch vessel. Procedural complications are often encountered while practicing this technique. These complications typically relate to the accurate placement of the main body prosthetic device and in particular to the precise alignment of the side wall opening to the native side branch vessel. Subsequent placement of the side branch guidewire through the main body prosthetic device, through the side wall opening and then into the side branch vessel can also be problematic. The deployment of the side branch prosthetic device into the native vessel can present problems relating to the longitudinal placement of the device.

Alternate procedures for treating bifurcated vessels place the guidewires prior to the device deployments. After the main body prosthetic device is deployed, it is advantageous to then remove the main body delivery catheter prior to the delivery of the side branch prosthetic device. Typical delivery systems incorporate guidewires that are contained or captured within the delivery catheter. The catheter removal therefore requires careful management of the side branch guidewire to prevent its dislodgement during the removal of the delivery catheter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a prosthetic device according to an aspect of the invention.

FIG. 2 is a perspective view of a catheter assembly having a removable side branch guidewire tube.

FIG. 3 is a flow chart listing the process steps used for the fabrication and delivery of a catheter assembly having a removable side branch guidewire tube.

FIG. 4 is a perspective view of an expanded main body device with first temporary tube routed through the main body lumen and a second temporary tube routed through a side branch support.

FIGS. 5A and 5B are perspective views of a compressed and constrained main body device displaying the routing of two temporary tubes.

FIG. 6A is a perspective view of a distal catheter portion.

FIG. 6B is a perspective view of a main body device compressed and constrained onto a distal catheter portion.

FIG. 7 is a perspective view of a compressed and constrained main body device with a proximal catheter portion bonded to a distal catheter portion.

FIG. 8 is a schematic diagram showing pre-placed guidewires loaded through a compressed device with a removable guidewire tube.

FIG. 9 is a schematic diagram showing a side branch guidewire routed through a removable guidewire tube.

FIG. 10 illustrates the removal of a side branch guidewire tube.

FIG. 11 is a schematic diagram showing a compressed main body device positioned at a branch vessel target site.

FIG. 12 is a perspective view of an expanded main body device having a side branch opening aligned to a side branch vessel.

FIG. 13 illustrates the initial advancement of a compressed side branch device.

FIG. 14 shows a compressed side branch device routed through the main body device and into the side branch vessel.



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Previous Patent Application:
Methods of implanting a prosthesis
Next Patent Application:
Stent delivery system
Industry Class:
Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor
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stats Patent Info
Application #
US 20120296411 A1
Publish Date
11/22/2012
Document #
13562200
File Date
07/30/2012
USPTO Class
623/112
Other USPTO Classes
International Class
61F2/84
Drawings
15



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